Coeliac Disease

Coeliac disease is an immune condition in which eating gluten damages the lining of the small bowel.

Gluten is found in wheat, barley and rye. In a person with coeliac disease, the immune reaction can impair the bowel lining's ability to absorb nutrients from food. Symptoms and their intensity vary between people.

Abdominal pain, bloating, diarrhoea, fatigue and unintentional weight loss are common presentations of coeliac disease. Some people notice symptoms mainly after eating, while others have less obvious digestive symptoms. Ongoing tiredness can be linked to poor absorption of nutrients.

The condition develops when a susceptible immune system reacts to gluten. This reaction injures the small-bowel lining. It is not caused by poor hygiene, and it is different from choosing to avoid gluten for personal preference.

Symptoms can continue while gluten remains in the diet, although they may come and go. Once diagnosed, avoiding gluten is the main treatment. The bowel lining can recover with careful dietary management, but accidental gluten exposure may trigger symptoms again.

Coeliac disease can run in families. Testing may also be considered when someone has persistent digestive symptoms, unexplained nutrient deficiency or another immune-related condition. A clinician can decide whether testing fits your symptoms and medical history.

Do not start a gluten-free diet before medical testing unless a clinician has advised it: removing gluten beforehand can affect test results. Assessment often begins with a blood test. If results or symptoms warrant it, a specialist may recommend further examination of the small bowel.

A strict gluten-free diet is the central treatment after diagnosis. This means checking ingredient lists and preventing cross-contact during food preparation. Nutrition counselling can help you replace gluten-containing staples with suitable foods and maintain balanced intake. A clinician may also check for iron, folate or vitamin B12 deficiency and recommend treatment where appropriate.

At home, keep gluten-free foods separate from crumbs, shared toaster surfaces and utensils that have touched regular bread. When eating out, explain that you need food without gluten and ask about preparation as well as ingredients. Planning snacks and meals before travel or social events can make choices less stressful.

Untreated bowel inflammation can contribute to poor absorption and nutrient deficiencies. Arrange a review if symptoms continue despite avoiding gluten, weight keeps falling, or you have persistent vomiting, dehydration, blood in stools or severe abdominal pain.

A GP can arrange initial assessment and guide referral when needed. Dietetic support is especially useful for learning label reading, avoiding cross-contact and building meals that remain enjoyable and nutritionally complete.